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Introduction... and questions regarding rough/lumpy idle 200 1993

posted by  OzzieH on  Wed Oct 23 11:35 CST 2013
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last visit: Fri Oct 24 12:16 CST 2014
[RELATED]

Machine Man is referring to the throttle plate stop screw.

You have done almost everything else. I don't know the correct order of the next steps, but I might consider the following:
1. throttle plate stop screw adjustment per Machine Man
2. New ECT sensor (from my reading in the Bentley manual, the main three sensors for engine mgmt appear to be AMM, o2 sensor, ECT sensor)
3. Trying different AMM
4. If you decide to purchase a reman AMM, I had very very bad luck with Programma. The only reman AMM I would consider would be the Bosch unit (look at Amazon.com price--much better)
5. Clean injectors
6. New sock filter on in-tank fuel pump






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